<!--
 * @Descripttion: 
 * @version: 
 * @Author: 十三
 * @Date: 2021-09-05 17:06:22
 * @LastEditors: 十三
 * @LastEditTime: 2022-03-07 23:35:19
-->
<template>
  <div id="app">
    <router-view/>
  </div>
</template>

<script>
export default {
  name: 'App',
    // 防止数据丢失
  created () {
    //在页面加载时读取sessionStorage里的状态信息
    if (sessionStorage.getItem("store") ) {
      this.$store.replaceState(Object.assign({}, this.$store.state, JSON.parse(sessionStorage.getItem("store"))))
    }
    //在页面刷新时将vuex里的信息保存到sessionStorage里
    window.addEventListener("beforeunload",()=>{
      sessionStorage.setItem("store", JSON.stringify(this.$store.state))
    })
  }
}
</script>

<style>
#app {
  font-family: 'Avenir', Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-align: center;
  color: #2c3e50;
}
  *{
    margin: 0;
    padding: 0;
  }
</style>
